📍Use lombok, reformat, and optimize the code (#1560)

* Use lombok, reformat, and optimize the code

* Fix merge conflicts and some sonar issues

Co-authored-by: va1m <va1m@email.com>

mute-idiom/src/main/java/com/iluwatar/mute/App.java

@@ -26,8 +26,7 @@ package com.iluwatar.mute;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.util.Optional;
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
+import lombok.extern.slf4j.Slf4j;
 
 /**
  * Mute pattern is utilized when we need to suppress an exception due to an API flaw or in situation
@@ -44,10 +43,9 @@ import org.slf4j.LoggerFactory;
  * </code>
  * </pre> every time we need to ignore an exception.
  */
+@Slf4j
 public class App {
 
-  private static final Logger LOGGER = LoggerFactory.getLogger(App.class);
-
   /**
    * Program entry point.
    *